Ribbon-spool for typewriters



H. A. FOOTHORAP.

RIBBON SPOOL FOR TYPEWRITEHS.

APPLICATION FILED Auw?. 1918.

Patented May 17, 1921.

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" 4UNITED s'rA'r1=.sV

PATENT OFFICE;

'HARRY ARTHURV Foo'rHoRAP, or nAnm'snui-se, PENNSYLVANIA, A'ssreNoR 'ro ELLIOTT-.FISHER CQMPANY, or HARRISBURG, PENNSYLVANIA, A coRPoRATroN or DELAWARE.

Latimer l viaIiiBoN-sroor. FOR TYPEWRITERS.

Specification of Letters Patent. v Patented May 17,`1921 Driginal application led December 14, 1914, Serial No. 877,216. Divided and this application Ied vAugust 17, 1918. Serial No. 250,315.

To all whom it 'may concer/n.'

Be it known that I, HARRY ARTHUR FooTHoRAr, citizen of the`United States of America, residin at Harrisburg in the county of Dauphin and State of lPennsylvania, have invented certain new and useful Improvements in Ribbon-Spool's for Typewriters, of which the following is a specification.-

This invention relates to a novel ribbon spool adapted more particularly for use in connection withmachines of that type characterized by a stationary platen and downwardly acting printing mechanism.

The' mechanism shown in theaccompanying drawings is also shown. and described in applicants-copending application for Letters Patent of the United States Serial No. 877,216, filed Dec. 14, 1914, of which this is a division. Only` so much of the mechanism disclosed insaid copending application as is necessary to "the understanding ofthe features of the invention claimed herein is shown and described in the present application.

'The object of the invention is to produce an eicient and inexpensive Vrobbon spool,

the primary elements of which are accessibly carried by the escapement brackets.

To the accomplishment of the above recited obj ect and others which will more fully `hereinafter appear, one embodiment of the invention resides in the'construction and arrangement of parts illustrated inthe accompanying drawings, described in the following specification, and succinctly defined in the appendedv claims.

In the accompanying drawings:

Figure 1 is a side view of the ribbonspool.

Fig. 2vis a sectional view ofthe ribbon spool, and its mountings. y

- Fig. 3 is a view ofthe outer h ub section. Fig. 4 is a view of the ribbon cup orbarrel.

Fig. 5 is a view of the inner hub section.

Fig. 6 is a view of the carrying spindle.

Fig. 7 isa view of theribbon. cup or barrel showingthe end opposite to that illustrated in Fig. 4. f

e The machine to which my ribbon spoolv is articularly adapted is what is known as the Hiott-Fisher billing machine which is of that typev in which the platen is stationary and above which moves longitudinally-a line l space frame supporting a carriage which is movable transversely' of the yplaten to letter space the wrlting accomplished by a downwardly acting printing mechanism mounted on and movable with said carriage;

The typewriter carriage shownin my ap' plication as above cited is not illustrated in the present applicatlon, and while 'it is designed vto use apairof the spools such as described one only has been illustrated.

The spools are supported from the carriage by brackets,`a portion of one of which is shown at l.

Each of the ribben spools is carried by a spindle 2 extended outwardly and fixed at- 5 is formed with an axial recess 10 which -L `accommodates the flange 4 of the spindle and is internally threaded, as shown in Fig.

2, to receive the externally threaded inner end of the outer hub section 11 provided with 'a knurled head l2 and with an axial bore 13 for the reception of there'duced nd' o,

of the spindleupon which it rotates. tatable on the outer hub section 11 adjacent to the knurled head and yheld in place thereby is a flange ringe 14 to which is secured the outer spool flange 15. The ribbon R isA vsecured tothe spool by what is known as a ribbon cup or barrel .16 which is a thin metal shell of cylindrical form having a depressed bottom or outer end 17' formed with an opening to receive the threaded inner end of the outer hub section 11 and retained between the anges-l and 9. The shell cup or barrel 16 is alsol formed with a longitudinal slit18 through which the rib-V bon R is passed and retained by a, metal tab 19 located within the cup and too large to be drawn through the slit 18. As clearly shown in Fig. 7, the slit 18 opens at the inner endof the cup and permits the ribbon to be slipped into place without the necessity for separate securing devices. The

inner edge of the cup or shell 1,6 is provided with one or more notches 20, which, when the shell is slipped to its place on the inner spool section, Yengage the pin 7 which thus compel the ribbon, shell and spool to rotate in unison. One of these notches 20 is prefera'bly formed at the end of the slit 18 so v ing the -knurled head 12, the outer ing a shoulder,

that, when the shell is in place,.one of the pins positively closes the end of the slit and precludes any sidewise working of the ribbon. I l

Referring to Fig. 2, let us assume that it -is desired to replace the ribbon. By graspspool section may be removed or unscrewed from the inner spool section.- The ribbon fasten- .ing device or shell 16 with ,the ribbon Wound thereonis then slipped oil. Another shell with a new ribbon wound thereon may then be slipped upon the inner spool section and engaged by the pins 7 Where it will be held by thelange l5, when the outer spool sec -tin is screwed back into place.

What I claim is 1. The combination with a hub section, of a spindle rotatably supportg said section, 4means retaining the hub section against `endwise movement on the lspindle, a secnecte'd with the first name hub section for rotation therewith Abut separable therefrom and from 'the spindle.

hub section first named' pindle and coni 3. The combination with aspindle having a reduced end and a shoulder intermediate of its ends, of a hub section confined on theA spindle by the shoulder thereof, a second hub section screwed intoV the lirst named hub section and rotatable on theI reduced end of the spindle and a ribbon shell rotatable with and carried by thev hub sections.

4. The combination with a huh section having radial pins, of a shell having notches vengaging the pins and a lsecond hub section screwed into the iirst named hub section and confining the shell in its pin engaging position.

5. A resilient ribbon shell or core having a longitudinal open ended slit to accommodate' the ribbon and a plurality of notches in one edge'forthe engagement of its support, one of said notches being formed by the enlargement of the open end of the slit' and facilitating the insertion of the ribbon in said slit. L

6. A ribbon .shell or core having an end formed with an opening of smaller diameter than the diameter of the shell, to facilitatev the support of the shellV and said shell being also provided with a ribbon retaining slit, and with a notch facilitating the retention of theI shell on a ribbon spool. o

' 7. The combination with a hub section having radial pins and a spool pinion, of a shell having a ribbon receiving 'slit and notches engaging the pins, and a movable hub section engaging the hub section first named and confining the shell.

In testimony whereof I affix my signature in the presence of two Witnesses.

HARRY ARTHUR- FOOTHORAP. Witnesses: i

J. F.v CULVERWELL, MARSHALL H. DEAN. 

